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(svn r2831) Fix some potential and real buffer overflows

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tron 2005-08-07 14:18:17 +00:00
parent 14e80ca159
commit 3f39db10d7
3 changed files with 18 additions and 7 deletions
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20
settings.c
View File

@ -524,6 +524,7 @@ static const void *string_to_val(const SettingDesc *desc, const char *str)
case SDT_STRINGBUF:
case SDT_STRINGQUOT:
case SDT_INTLIST:
case SDT_CHAR:
return str;
}
@ -589,6 +590,11 @@ static void load_setting_desc(IniFile *ini, const SettingDesc *desc, const void
case SDT_STRINGQUOT:
if (p) ttd_strlcpy((char*)ptr, p, desc->flags >> 16);
break;
case SDT_CHAR:
*(char*)ptr = *(char*)p;
break;
case SDT_INTLIST: {
if (!load_intlist(p, ptr, desc->flags >> 16, desc->flags >> 4 & 7))
ShowInfoF("ini: error in array '%s'", desc->name);
@ -713,6 +719,10 @@ static void save_setting_desc(IniFile *ini, const SettingDesc *desc, const void
case SDT_INTLIST:
make_intlist(buf, ptr, desc->flags >> 16, desc->flags >> 4 & 7);
break;
case SDT_CHAR:
sprintf(buf, "\"%c\"", *(char*)ptr);
break;
}
// the value is different, that means we have to write it to the ini
item->value = pool_strdup(&ini->pool, buf, strlen(buf));
@ -990,11 +1000,11 @@ const SettingDesc patch_settings[] = {
};
static const SettingDesc currency_settings[] = {
{ "rate", SDT_UINT16, (void*)1, &_custom_currency.rate, NULL },
{ "separator", SDT_STRINGQUOT | (2) << 16, ".", &_custom_currency.separator, NULL },
{ "to_euro", SDT_UINT16, (void*)0, &_custom_currency.to_euro, NULL },
{ "prefix", SDT_STRINGQUOT | (16) << 16, NULL, &_custom_currency.prefix, NULL },
{ "suffix", SDT_STRINGQUOT | (16) << 16, " credits", &_custom_currency.suffix, NULL },
{ "rate", SDT_UINT16, (void*)1, &_custom_currency.rate, NULL },
{ "separator", SDT_CHAR, ".", &_custom_currency.separator, NULL },
{ "to_euro", SDT_UINT16, (void*)0, &_custom_currency.to_euro, NULL },
{ "prefix", SDT_STRINGQUOT | lengthof(_custom_currency.prefix) << 16, NULL, &_custom_currency.prefix, NULL },
{ "suffix", SDT_STRINGQUOT | lengthof(_custom_currency.suffix) << 16, " credits", &_custom_currency.suffix, NULL },
{ NULL, 0, NULL, NULL, NULL }
};

1
settings.h
View File

@ -12,6 +12,7 @@ enum SettingDescType {
SDT_STRINGBUF,
SDT_INTLIST,
SDT_STRINGQUOT, // string with quotation marks around it
SDT_CHAR,
SDT_INT8 = 0 << 4,
SDT_UINT8 = 1 << 4,

4
settings_gui.c
View File

@ -1319,7 +1319,7 @@ void DrawArrowButtons(int x, int y, int state)
DrawStringCentered(x+15, y+1, STR_681A, 0);
}
char _str_separator[2];
static char _str_separator[2];
static void CustCurrencyWndProc(Window *w, WindowEvent *e)
{
@ -1467,7 +1467,7 @@ static void CustCurrencyWndProc(Window *w, WindowEvent *e)
break;
case 1: /* Thousands seperator */
_custom_currency.separator = (b[0] == '\0') ? ' ' : b[0];
ttd_strlcpy(_str_separator, b, 16);
ttd_strlcpy(_str_separator, b, lengthof(_str_separator));
break;
case 2: /* Currency prefix */
ttd_strlcpy(_custom_currency.prefix, b, lengthof(_custom_currency.prefix));